a Value based on the analysis of 5-methyltetrahydrofolate, 10-Formyl folic acid, 5-Formyltetrahydrofolic acida Value based on the analysis of 5-methyltetrahydrofolate, 10-Formyl folic acid, 5-Formyltetrahydrofolic acida Value based on the analysis of 5-methyltetrahydrofolate, 10-Formyl folic acid, 5-Formyltetrahydrofolic acid